1. cost n .[U] 费用，代价
对于许多父母来说,两份薪水支付上学的费用是很基本的.For many parents, two salaries are essential to cover the cost of (= pay for) school fees.
v .[T] cost, cost "How much does this book cost (= What is the price of this book)?"
costly :    adj. expensive: 昂贵的
2 cover
v.①.采访，报道She covered the outbreak of bird flu in Viet Nam. 她在越南采访有关禽流感暴发事件。
②. 掩饰，隐藏She laughed to cover her anxiety.她试图以笑来掩饰她的焦虑。
③（不用被动语态）行过（路程），学过We covered about 30 miles a day.我们每天大约走三十英里。
④（钱）足够付Is the money enough to cover the tuition?这笔钱付学费够吗？
3 eager adj.渴望的，be eager for sth. 热切/渴望He was eager for success.
be eager to do sth.渴望做某事
eager anxious 都有“渴望”之意，Eager带有更多的热切、兴奋的情绪。Anxious带有更多的焦虑的心情。
4 case 事实，实情，情况,事例，实例
in case 以防；可能；in case of 如果；万一
in that/this case 在那样/这种情况下 in no case 决不
▲注意：in case 的从句常用一般现在时表示将来，或should +do.
1.________ fire, ring the alarm bell. 2.__________ he comes, let me know.
3.__________ should the bird flu be spread.
4.It might rain tomorrow. _________ we will have to put off the sports meet until next Friday
In case of In case In no case In that case
5 look forward to :
她盼望着再次看到她的孙子孙女们. She was looking forward to seeing the grandchildren again.
6 experienced adj. 有经验的，熟练的，
be experienced at/ in 在某方面熟练He is very experienced in/ at repairing cars.
7 avoid(避免) doing sth. deny(否认) doing sth. Admit(承认) doing sth.
8 so as to 与 in order to
so as to 只能放在主句后．in order to 可放在主句前，也可放在主句后．
9 accuse, charge, blame 词义辨析
accuse （指控 ）sb. of ( doing ) sth. charge ( 指控 ）sb. with ( doing ) sth.
accuse ( 指责 ）sb. of (doing ) sth. blame （ 责备 ）sb. for ( doing ) sth.
10 Practice相关短语或表达：
Practice makes perfect. 熟能生巧。 put sth. into practice 把…付诸于实践
practise doing sth. in practice 在实践中 out of practice疏于练习

11 life-style n. way of life 生活方式eg: He and his brother have quite different life-styles.
12 regular adj. 有规律的,定期的regularly adv.
13 in the long term 就长期而言in the short term就短期而言
就长期而言，这件事是值得做的。It is worth doing in the long term.
14 skip vt.跳过,略过We skipped science class again.我们又一次逃了自然科学课
15 Control vt.&n.控制,管理,调节
我们大家都要学会控制自己.All of us should learn to control ourselves.
lose control of sth. get sth. under control out of control
16 take in （1）吸收，吸入（2）了解，理解，领会
17 This is how the story goes. go:流通，流传
The story goes that….据说 An old saying goes　　有一句俗话
18 be supposed to do sth.表示主语被要求做某事，含有必须、应该或理应做某事之意．
be supposed to 的不定式可以有完成式，表示应该做而未做的事．
He is supposed to have come to the meeting now.
他本该现在已到了（但他没来）．
1.Anne couldn’t concentrate ___ what she was doing while her family were watching TV.
A. to B. on C. for D. in
2. It might rain tomorrow, ____ we will have to put off the sports meet until next Friday.
A. in case B. if possible C. in which case D. in that case
3. The train ____ arrive at 1:30, but it was an hour late.
A. was about to B. was likely to C. was certain to D. was supposed to
4.____disturb his sleeping father, Tom tiptoed into his room.
A. So as not to B. In order not to C. So that not D. In order that not
5. Jane was painting the bells and ___ Pat was watching TV.
A. at eh meanwhile B. meanwhile C. when D. while
6. During summer holidays, I always take up gardening as my _____ to pass my time.
A. occupation B. business C. profession D. employment

BCDBBA
语法部分：
Ⅰ带to doing的常用结构
1. 动词+介词to+动名词
（1）admit to doing sth 承认做了某事
(2) apply to doing sth 适用于做某事
(3) object to doing sth 反对做某事
(4) see to doing sth 负责做某事
(5) stick to doing sth 坚持做某事
(6) take to doing sth 喜欢上做某事，逐渐习惯做某事
2. 动词+宾语+介词to+动名词
(1)apply oneself to doing sth 专心致力于做某事
(2) devote sth / oneself to doing sth 把…献给 / 献身于做某事
(3) limit sth to doing sth 把…限制在做某事的范围内生词表:

essential [i´senʃəl]   a.必需的 n.要素，要点   (初中英语单词)

costly [´kɔstli]   a.昂贵的；费用大的   (初中英语单词)

expensive [ik´spensiv]   a.费钱的，昂贵的   (初中英语单词)

anxious [´æŋkʃəs]   a.担忧的；渴望的   (初中英语单词)

accuse [ə´kju:z]   vt.谴责；控告，告发   (初中英语单词)

charge [tʃɑ:dʒ]   v.收费；冲锋 n.费用   (初中英语单词)

supposed [sə´pəuzd]   a.想象的；假定的   (初中英语单词)

concentrate [´kɔnsəntreit]   v.聚集；浓缩；全神贯注   (初中英语单词)

sleeping [´sli:piŋ]   n.&a.睡着(的)   (初中英语单词)

painting [´peintiŋ]   n.绘画；(油)画；着色   (初中英语单词)

meanwhile [´mi:n´wail]   n.&ad.其间；同时   (初中英语单词)

occupation [,ɔkju´peiʃən]   a.职业的；军事占领的   (初中英语单词)

profession [prə´feʃən]   n.职业；声明；表白   (初中英语单词)

outbreak [´autbreik]   n.(战争等的)爆发   (高中英语单词)

seeing [si:iŋ]   see的现在分词 n.视觉   (高中英语单词)

saying [´seiŋ, ´sei-iŋ]   n.言语；言论；格言   (高中英语单词)

experienced [ik´spiəriənst]   a.有经验的；熟练的   (英语四级单词)